Answer:
Ceiling effect
Step-by-step explanation:
As a result of an experiment made to see if violent video games had any effect on making people aggressive, it is found that, in fact, it makes people more aggressive as a pool of people who were exposed to violent video games for a period of time showed more aggressiveness than people who didn't.
This is called ceiling effect and this means that the maximum number of subjects in a test ot study show favorable responses to an observed variable.